The ELELA3000C30A from ECHO Microwave is a Low Pass RF Filter with Frequency 1600 to 3000 MHz, Bandwidth 1400 MHz, Insertion Loss 1.5 dB, Rejection 30 min. @ 3700MHz, Return Loss 14 dB. Tags: Module with Connector, Lumped Component Filter. More details for ELELA3000C30A can be seen below.